/* * Copyright (C) 2008-2017 TrinityCore * Copyright (C) 2005-2009 MaNGOS * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License along * with this program. If not, see . */ #include "MapUpdater.h" #include "Map.h" #include class MapUpdateRequest { private: Map& m_map; MapUpdater& m_updater; uint32 m_diff; public: MapUpdateRequest(Map& m, MapUpdater& u, uint32 d) : m_map(m), m_updater(u), m_diff(d) { } void call() { m_map.Update (m_diff); m_updater.update_finished(); } }; void MapUpdater::activate(size_t num_threads) { for (size_t i = 0; i < num_threads; ++i) { _workerThreads.push_back(std::thread(&MapUpdater::WorkerThread, this)); } } void MapUpdater::deactivate() { _cancelationToken = true; wait(); _queue.Cancel(); for (auto& thread : _workerThreads) { thread.join(); } } void MapUpdater::wait() { std::unique_lock lock(_lock); while (pending_requests > 0) _condition.wait(lock); lock.unlock(); } void MapUpdater::schedule_update(Map& map, uint32 diff) { std::lock_guard lock(_lock); ++pending_requests; _queue.Push(new MapUpdateRequest(map, *this, diff)); } bool MapUpdater::activated() { return _workerThreads.size() > 0; } void MapUpdater::update_finished() { std::lock_guard lock(_lock); --pending_requests; _condition.notify_all(); } void MapUpdater::WorkerThread() { while (1) { MapUpdateRequest* request = nullptr; _queue.WaitAndPop(request); if (_cancelationToken) return; request->call(); delete request; } }